JPS6112621Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape cassette, which is arranged between an upper half and a lower half and is not provided with a special position regulating member in the left-right direction, for example, a rotation center axis. By providing a mechanism for coupling and fixing the upper and lower halves of the tape cassette near the tape reel arrangement position, it can be used both as a tape reel position regulating mechanism and a coupling and fixing mechanism for the upper and lower halves. To provide a tape cassette which has a simple structure, can be manufactured at low cost, and is small and lightweight since no extra parts are required.

Figures a, b, c, and d are smaller than standard type cassettes used when attached to a recording/reproducing apparatus such as a standard type video tape record, for example, used when attached to a portable type recording/reproducing apparatus. These are a plan view, a side view, a rear view, and a bottom view of a small cassette with a small amount of tape. Fig. 2 is a plan view with the upper half of this small cassette removed, Fig. 3 is a cross-sectional view, and Figs. 6 and 6 are partially enlarged explanatory views of the small cassette.

In the figure, A is a small cassette, and the frame of this small cassette A consists of an upper half 1, a lower half 2, and a front lid 3 for protecting the tape.
The hinge part 4 is formed by molding a part thinly of resin such as polypropylene, and the front cover 3 is normally biased in the closing direction by the action of a leaf spring 5, and the upper half 1 is closed. is attached to. A hole 6 is formed in the lower half 2, and a protrusion 7 is formed in the front cover 3. When the front cover 3 is closed, the protrusion 7 engages in the hole 6, and the front cover 3 has a lock. It's starting to take a while. By pressing the protrusion 7 and moving it backward, the locked state between the protrusion 7 and the hole 6 is released, and the front cover 3 can be rotated and opened against the repulsive force of the leaf spring 5. It's becoming like that.

A supply reel 8 and a take-up reel 9 are arranged in this small cassette A. The distance between the reel disks on the supply side and take-up side is shorter than that of a standard type recording/reproducing device that cannot be used. The magnetic tape 10 is arranged so that it runs along a predetermined running path between the supply reel 8 and the take-up reel 9. That is, the magnetic tape 10 is moved from the supply reel 8 to the guide pole 1.
1 and 12, and is then wound onto the reel 9 on the winding side. On the lower surface of the lower flange 13 of the supply reel 8, a protrusion 14 is formed in the radial direction of the supply reel. 13
A recess 15 that can engage with the projection 14 is also formed at a predetermined position of the lower half 2 corresponding to the projection 14 of the upper half 1, and the supply side reel 8 is normally moved by the action of a leaf spring 16 attached to the upper half 1. lower half 2
The convex 14 and the concave 15 engage with each other, and the supply reel 8 is fixed to prevent the magnetic tape wound on the supply reel 8 from loosening. When the small cassette is installed in the recording and reproducing apparatus, the supply reel 8 is lifted by the supply reel disk 80 of the recording and reproducing apparatus by a specified amount toward the half 1 side against the repulsive force of the leaf spring 16. The engaged state between the protrusion 14 and the depression 15 is released. That is, a hole 17 for inserting a supply reel disk 80 of the recording/reproducing device is formed in the lower half 2 at a position corresponding to the supply reel 8, and this supply reel disk is inserted into the supply reel 8. Become so. The take-up reel 9 is inserted into a shaft 18 fixed to the lower half 2, and
It is designed to be able to rotate around this shaft 18. The attachment of this shaft 18 to the lower half 2 is as follows:
For example, a groove 19 is formed in the lower part of the shaft 18,
In addition, a protrusion 20 that fits into the groove 19 is formed on the lower half 2, and with the protrusion 20 fitted into the groove 19, the shaft 18 is screwed into the lower half 2 with a screw 21 or the like. Once screwed in, the shaft 18 will not spin idly during screwing, so it can be easily installed. Teeth 23 are formed on the outer periphery of the lower flange 22 of the reel 9 on the take-up side, and cutouts 24 are formed at predetermined locations on the lower half 2 so that gears, for example, can be engaged with the teeth 23. ing. Then, the take-up reel 9 is rotated by a predetermined driving force transmission mechanism such as a gear that meshes with the teeth 23, and the magnetic tape is wound on the take-up reel from the supply reel through a predetermined running path. Becomes taken.

A brake mechanism is disposed on the take-up reel 9 so that the take-up reel 9 does not rotate when the small cassette A is not attached to the recording/reproducing apparatus. This brake mechanism includes, for example, a pawl 25 that engages teeth 23 of the lower flange 22 of the reel 9 on the take-up side.
The spring 27 is inserted into the shaft 26 of the
In the state where it is pressed and biased by the action of
The claws 25 are engaged with the teeth 23 of the lower flange 22, so that the take-up reel 9 does not rotate and the magnetic tape does not loosen. In order to release this locked state and allow the take-up reel 9 to rotate, a pin is inserted through the hole formed in the lower half 2.
This pin lifts the pawl 25 against the repulsive force of the spring 27, and the pawl 25 and the reel 9 on the winding side are connected to each other.
The reel 9 on the take-up side is in a free state and can rotate.

The upper and lower halves of the small cassette are formed with a recessed part and a convex part for latching at the joint end of the upper half and the lower half, and the upper half and the lower half are connected by fitting the convex part and the recessed part. The halves are temporarily fastened, and near the side of the position where the supply reel 8 is arranged in the upper half 1 and the lower half 2, for example, a substantially concentric circle with a radius slightly longer than the radius of the supply reel is formed from the center position of the supply reel 8. Bosses 40, 4 formed at the upper position
Pass the screws 41, 41' through 0', and
The upper half 1 and the lower half 2 are strongly connected by this. Therefore, a mechanism for coupling and fixing the upper half 1 and the lower half 2 is provided at such a position, especially near the side of the supply reel 8 between the supply reel 8 and the take-up reel 9. If this is done, this coupling and fixing mechanism will act as a positional regulator to prevent the supply reel 8 from shifting toward the take-up reel 9, and the supply reel 8 and the take-up reel 9 will be connected to each other. There is no contact between the magnetic tape and the magnetic tape wound on the supply reel or the take-up reel. Furthermore, when the tape cassette is installed in the recording/reproducing apparatus, even if the supply reel 8 is misaligned, the positional deviation is not that great, so the supply reel disk 80 of the recording/reproducing apparatus can be easily inserted into the supply reel. This makes it possible to smoothly attach the tape cassette to the recording/reproducing device.

FIGS. 7, 8, 9, and 10 are explanatory diagrams of an adapter used when the above-mentioned small cassette A is attached to a standard type recording/reproducing apparatus.

In the figure, B denotes an adapter which can house the small cassette A therein and has a size and shape such that it can be attached to a standard type recording/reproducing device.

The frame of this adapter B consists of a lower half 51 and an upper half 52, and the lower half 51 is formed with a storage section 53, which is a notch in which the small cassette A is stored. This storage section 53 has protrusions 54, 55, 56, 57 formed at its ends to support the small cassette A, while the lower half 2 of the small cassette A has these protrusions 54, 55, 56, 57. Recesses 28, 29, 30, and 31 are formed corresponding to the positions, and these projections and recesses are used to position the small cassette A, particularly in the vertical direction. When these protrusions and recesses are fitted, the bottom surface of the small cassette and the bottom surface of the adapter are made to be approximately on the same plane. Further, pins 58 and 59 are implanted in the protrusions 54 and 55, and these pins 58 and 59 are inserted into the holes 32 and 33 formed in the lower half 2 of the small cassette A, whereby the small cassette In addition to positioning A, the pin 58 also serves to release the brake of the take-up reel 9 of the small cassette A. That is, the position of the pin 58 and the hole 32 is such that the pin 58 is in the hole 3
The position is such that the pin 58 lifts the pawl 25, which is the brake mechanism of the take-up reel 9 of the small cassette A, when the small cassette A is inserted into the reel 2.

When adapter B with small cassette A inserted therein is attached to a standard type recording/playback machine, the supply reel disk of the two reel disks of the record/playback machine is inserted into the supply side reel 8 of small cassette A. However, since the take-up reel disk cannot be inserted into the take-up reel 9, the take-up reel disk is inserted into the lower half 51 of the adapter B at a position corresponding to the position of the take-up reel disk. A gear 60 that is driven by the engine is attached.
Furthermore, when the small cassette A is stored in the adapter B, the gear 61 that meshes with the teeth 23 of the lower flange 22 of the take-up reel 9 of the small cassette A is connected to the gear 60.
The reel 51 is attached to the lower half 51 so as to be engaged with the reel 8 of the small cassette A, and the engagement between the claw and the tooth is released by the pin 58, so that the driving force of the recording/reproducing machine is applied to the supply reel 8 of the small cassette A. Take-up reel 9
and the magnetic tape begins to run.
That is, even if you try to install small cassette A into a standard type recording/reproducing machine, the relative positions of the supply side reel and take-up side reel of small cassette A will be the same as the supply side reel disk and the take-up side reel disk of the recording/playback machine. For example, if the supply reel disk is placed on the supply reel,
By installing a gear similar to the take-up reel at the position of the take-up reel disk and placing a driving force transmission means between this gear and the take-up reel of the small cassette, the standard type The driving force of the recording/reproducing machine can now be transmitted to the small cassette A.

Further, notches 34 and 35 are formed on both shoulders of the upper half 1 of the small cassette A, and walls 62 and 63 are formed in the upper half 52 of the adapter B in correspondence to the positions of the notches 34 and 35. When the upper half 52 is aligned with the lower half 51 and screwed together, for example, the small cassette A will not come out from the adapter B, and furthermore, the top surface of the small cassette and the top surface of the adapter will be almost the same. It is designed to be flat.

When using the above-mentioned small cassette A by attaching it to a recording/playback device exclusively for this small cassette, such as a portable type recording/playback device, attach a standard type cassette to the standard type recording/playback device. As in the case of use, when the small cassette is inserted into the pop-up mechanism of the recording/reproducing device and the pop-up mechanism is moved to the operating position, the front lid of the small cassette A opens and the front cover formed on the front and bottom of the small cassette A opens. Notch 3
At steps 6, 37, and 38, the loading pole, capstan, etc. of the recording/reproducing device are inserted inside the magnetic tape, and the supply reel disk of the recording/reproducing device is fitted to the supply reel of the small cassette.
In addition, the teeth of the lower flange of the take-up reel mesh with a gear-like driving force transmission mechanism to the take-up reel in the adapter B of the recording/reproducing device, and the driving force of the recording/reproducing device is also transmitted to the take-up reel. Become so. Furthermore, the convex portions of the recording/reproducing device are aligned with the recesses 28, 29, 30, and 31 formed in the lower half 2 of the small cassette, and the pins of the recording/reproducing device are inserted into the holes 32, 33 of the lower half to record. The position of the small cassette A is regulated within the reproducing apparatus, and the locking state of the claw on the take-up reel of the small cassette A is released, so that the magnetic tape is maintained in a running state. Then, the magnetic tape is unwound from the small cassette by the loading pole, is attached to the magnetic head, and the driving force is transmitted to the take-up reel so that the magnetic tape runs along a predetermined running path, and recording and playback are performed. It can be done.

When using this small cassette A with a standard type recording/playback device, attach the small cassette A to the adapter B, and then attach this adapter B to the recording/playback device in the same way as when using a standard type cassette. Perform recording and playback. First, with the front lid of small cassette A opened, small cassette A is stored in the storage section of adapter B, and in this stored state, the magnetic tape wound on the supply reel is inserted into the small cassette A when the front lid of small cassette A is opened. Pull out a predetermined amount of magnetic tape from the front cover, attach this magnetic tape to the guide poles 64, 65, and 66 provided on adapter B, arrange the magnetic tape in the same way as the magnetic tape in a standard type cassette, and place it on top of adapter B. Align the half with the lower half and tighten the screws. Since the small cassette A stored in the adapter B is constructed in the same way as a standard type cassette, it can be recorded and reproduced by being attached to a standard type recording/reproducing machine. That is, a small cassette is attached to the adapter. The gear 61 of the adapter meshes with the teeth of the lower flange 22 of the take-up reel 9, and the pin 58 of the adapter lifts the pawl 25 against the repulsive force of the spring, releasing the lock of the take-up reel 9. The driving force of the take-up reel disk is transmitted to the take-up reel 9 via gears 60 and 61. Conversely, when the small cassette is taken out from the adapter, the engagement between the take-up reel 9 and the gear 61 is disengaged, and the pin 58 is removed from the small cassette, so that the claw 25 is pulled out by the repulsive force of the spring.
is restored, and the take-up reel 9 becomes locked.

To attach the magnetic tape inside the small cassette to the guide pole of the adapter, pull out the magnetic tape a little from the opened front lid by hand or using an appropriate pull-out mechanism, and attach the small cassette to the lower half of the adapter. At the same time, the pulled out magnetic tape is attached directly to the guide pole of the adapter by hand.

Furthermore, when the tape is directly pulled out from the above-mentioned small cassette by hand and attached to the adapter to form a tape path, the front lid of the small cassette is always kept open in this state, and the storage of the small cassette is In order to protect the tape, it is desirable to prevent the front cover from opening when necessary. That is, it is desirable that each state is maintained after the opening/closing operation of the front cover is completed, and that the movement is smooth during the opening/closing operation.

As mentioned above, the tape cassette according to the present invention is
A tape cassette case body composed of an upper half and a lower half, a supply side reel and a take-up side reel provided in the tape cassette case body, and the supply side reel and take-up side reel. A coupling means for coupling the upper half and the lower half is provided between the upper half and the lower half, and the coupling means serves also as position regulation so that at least one reel does not come into contact with the other reel even if the reel swings. The upper half and the lower half of the cassette body are not only firmly connected and fixed, but also the connecting means also plays the role of regulating the position of the tape reel, eliminating damage to the tape due to misalignment of the tape reel. Moreover, since there is no need to construct a special tape reel position regulating member, the structure of the cassette body becomes simpler, the manufacturing cost of the cassette body is also lowered, and the number of unnecessary parts is reduced, making it compact and compact. It has features such as being lightweight and allowing smooth installation of the tape cassette into the recording/reproducing device.

[Brief explanation of the drawing]

Figures 1a, b, c, and d and Figures 2 to 6 are explanatory diagrams of one embodiment of the tape cassette according to the present invention, and Figures 7 to 10 are explanatory diagrams of an adapter that accommodates the tape cassette. It is. A...Small cassette, B...Adapter, 1...
Upper half, 2... Lower half, 8... Supply side reel, 9... Take-up side reel, 16... Leaf spring, 4
0,40'...boss, 41,41'...screw.

Claims (1)

[Scope of utility model registration request] A tape cassette case body composed of an upper half and a lower half, a supply side reel and a take-up side reel provided in the tape cassette case body, and the supply side reel and take-up side reel. A coupling means for coupling the upper half and the lower half is provided between the upper half and the lower half, the coupling means also serving as position regulation so that at least one reel does not come into contact with the other reel even if the reel swings. A tape cassette featuring